Highly oriented papers

Production of highly oriented papers

Precise depositing of separated fibres by parallel moving application and suction system

Intellectual Property- und Innovationsmanagement

Deniz Bayramoglu, +49 6151 16-57215

Robert Heitzmann, +49 6151 16-57228

Paper Technology and Mechanical ProcessEngineering (PMV)

Frederic Kreplin, +49 6151 16-22630

Status quo

In conventional paper production a highly diluted fiber suspension is applied to a wire and dewatered by a vacuum zone over the full web width. The potential of a high fibre orientation in the resulting paper cannot yet be exploited. The objective of current research projects is the production of highly oriented papers. In contrast to conventional paper production, a traversing nozzle applies the fiber suspension to a circulating wire. When using a traversing nozzle with a static vacuum zone, the dewatering performance and fiber orientation are massively worsened by the intake of false air.

Our technology: Traversing suction system

The size and geometry of the vacuum system was adapted to the process. The vacuum zone now traverses parallel to the nozzle. This prevents false air being sucked in and thus ensures sufficiently fast dewatering.

Benefits of the sheet formation principle

  • Accurate fiber application
  • With regard to fiber orientation custom-made papers
  • Scalability through parallelisation or modular extension

Current stage of development

Technology Readiness-Level (TRL): Level 5. The system is currently being tested in the laboratory under realistic conditions.

Application possibilities

Higly oriented papers for load-path optimized compo-nents, defined pore structurs for filter systems or for controlling of liquid transport in the paper. Also conceivable: Production of oriented structures from GRP, CFRP or textile fibres as a basis for fibre composite materials.

Commercialization opportunities

For the implementation of the technology, we are looking for interested companies who would like to extend their product portfolio or open up new business fields. There are various possibilities for cooperation between the industrial partner and TU Darmstadt: from an exchange with the know-how carriers of the technology up to a close cooperation in case of further development needs. The technology is protected by intellectual property rights and can be used by the industry partner after a sale or licensing agreement.